Maria Rahozhkina refreshed the LOINC dataset within the OHDSI/Vocabulary-v5.0 repository, focusing on updating SQL scripts and ETL processes to ensure the data remained current and accurate. She modified concept mappings, relationship definitions, and data cleaning procedures, directly improving the quality and reliability of LOINC-related vocabulary for downstream analytics. Her work leveraged SQL and database management skills to streamline data loading and processing, supporting up-to-date insights for clinical and research applications. While the project scope was limited to a single feature over one month, the technical depth addressed essential data integrity and maintenance needs within the OHDSI ecosystem.